I think he only suggests that it's overkill when used with full security suites like Kaspersky, Bitdefender which are very capable themselves alone. Kaspersky more so as it has its wonderful Application Control. If someone use VS with combination with something like Windows Defender only then he doesn't say it's overkill. Some users often go even further by combining WD+Comodo FW+VS+Osarmor which is certainly overkill.Hehehe, not at all .
I have always been baffled as to why harlan constantly dismissed VS as overkill... It all makes sense now .